【新闻】FDA从未支持或者认可过任何剂量的三聚氰胺是安全的

cenzhihui

我来翻页，大家继续。

6688

FDA的声明有了,欧洲食品安全局的呢?谁去翻出来看看

drculax

QUOTE:

Posted by hioowei on 2008-9-19 15:40
不可能是安全的，明明就是ZF怕激起更大的公愤，杀一个，保一帮．其实这种潜规则，在行业里是通行的做法，没有例外的．

根据科学家的建议，FDA再一次向全国发布了一条消息，称家畜家禽即使吃了被污染的饲料，人类也可以放心食用，因为三聚氰胺被稀释后其危害是很小的，完全可以忽略不计。这条消息终于平息了一场风波，避免了美国的畜牧业蒙受不必要的损失。

yogibear

QUOTE:

Posted by 6688 on 2008-9-19 15:45
FDA的声明有了,欧洲食品安全局的呢?谁去翻出来看看

EFSA 一年前有个关于宠物食品，饲料里面的三聚氰胺(melamine)的一个provisional statement(临时声明)。

http://www.efsa.europa.eu/EFSA/e ... 2_1178625242716.htm


中国这次的，我并没有在其网站上找到。

[ Edited by  yogibear on 2008-9-19 16:48 ]

ibm老菜

声明不声明，懒的关注，关注的是，即使是安全的，奶粉里掺进这个是干么用的？是为了助奶吗？是为了提高奶制品质量？是为了防腐？还是为了应付检查？。。。。。为了。。？？

独下西楼

桃子为什么不进来，呼唤桃子

the_snake

商业中的任何行为都可以归于同一个出发点：利益最大化

yogibear

EFSA 的声明里提到：

In Europe, melamine is approved for use as a monomer and as an additive in plastics with
a specific migration limit of 30 mg/kg food (Commission Directive EC No 2002/72
related to materials and articles intended to come into contact with foodstuffs from 6
August 2002)1

drculax

单体是什么意思？

yogibear

CONCLUSIONS
The Scientific Committee of Food (SCF) derived a tolerable daily intake (TDI) of 0.5
mg/kg body weight (b.w.) per day for melamine for food contact materials but no details
were given for its derivation. Recently the U.S. Food and Drug Administration (FDA)
derived a TDI of 0.63 mg/kg b.w. per day which is in line with the TDI derived by the
SCF. For melamine a specific migration limit of 30 mg/kg food was agreed by the SCF
assuming a maximum consumption of 1 kg food containing the substance for a 60 kg
person.
Based on the NOAEL for sodium cyanurate derived from the 2-year study in rats of 154
mg/kg b.w. per day, a TDI of 1.5 mg/kg b.w. per day can be proposed using an
uncertainty factor of 100.
There is a lack of toxicity data for ammeline and ammelide. Because of the structural
similarities to melamine these compounds have been assumed to be of equal potency.
In conclusion, EFSA provisionally recommends to apply a TDI of 0.5 mg/kg b.w. per
day for the total of melamine and its analogues (ammeline, ammelide, cyanuric acid).
Because of a lack of toxicity data in domestic animals, EFSA provisionally recommends
to apply this tolerable intake level as established for humans also to domestic animals.
A source of uncertainty is the combined toxicity of melamine and cyanuric acid and their
possible synergistic effects in relation to the recently observed toxicity linked to the acute
renal failure and death of pet animals (cats and dogs) in the U.S. This mechanism is
currently under investigation.
Ocurrence data on melamine and its analogues in food and feed from Europe are needed
to perform a comprehensive risk assessment.

yogibear

QUOTE:

Posted by drculax on 2008-9-19 16:11
单体是什么意思？

这个我也不知道。 也许真手兄弟知道。

ibm老菜

QUOTE:

Posted by the_snake on 2008-9-19 16:09
商业中的任何行为都可以归于同一个出发点：利益最大化

这点同意，但商人也还算是人，否则，他就不是奶粉中掺进三聚氰胺，而是三聚氰胺中掺进奶粉了。。后者岂不是利益更最大化？*.*lll

独下西楼

呼唤真手~~~~

drculax

三聚氰胺市场没有奶粉市场大，每吨还比奶粉便宜几千块

商人为什么要麦三聚氰胺而不麦奶粉呢

the_snake

这就和“假酒为什么是往酒里兑水而不是往水里添酒”一样的问题了……

yogibear

QUOTE:

Posted by yogibear on 2008-9-19 16:13

CONCLUSIONS
The Scientific Committee of Food (SCF) derived a tolerable daily intake (TDI) of 0.5
mg/kg body weight (b.w.) per day for melamine for food contact materials but no details
were given for its derivation. Recently the U.S. Food and Drug Administration (FDA)
derived a TDI of 0.63 mg/kg b.w. per day which is in line with the TDI derived by the
SCF. For melamine a specific migration limit of 30 mg/kg food was agreed by the SCF
assuming a maximum consumption of 1 kg food containing the substance for a 60 kg
person.
Based on the NOAEL for sodium cyanurate derived from the 2-year study in rats of 154
mg/kg b.w. per day, a TDI of 1.5 mg/kg b.w. per day can be proposed using an
uncertainty factor of 100.
There is a lack of toxicity data for ammeline and ammelide. Because of the structural
similarities to melamine these compounds have been assumed to be of equal potency.
In conclusion, EFSA provisionally recommends to apply a TDI of 0.5 mg/kg b.w. per
day for the total of melamine and its analogues (ammeline, ammelide, cyanuric acid).
Because of a lack of toxicity data in domestic animals, EFSA provisionally recommends
to apply this tolerable intake level as established for humans also to domestic animals.
A source of uncertainty is the combined toxicity of melamine and cyanuric acid and their
possible synergistic effects in relation to the recently observed toxicity linked to the acute
renal failure and death of pet animals (cats and dogs) in the U.S. This mechanism is
currently under investigation.
Ocurrence data on melamine and its analogues in food and feed from Europe are needed
to perform a comprehensive risk assessment.  

用词很严谨。不过还是不能肯定。

drculax

QUOTE:

Posted by 独下西楼 on 2008-9-19 16:18
呼唤真手~~~~

对了，还要他考证一下三聚氰胺的半致死率

6688

QUOTE:

Posted by drculax on 2008-9-19 15:45



根据科学家的建议，FDA再一次向全国发布了一条消息，称家畜家禽即使吃了被污染的饲料，人类也可以放心食用，因为三聚氰胺被稀释后其危害是很小的，完全可以忽略不计。这条消息终于平息了一场风波，避免了 ...

1.家禽吃饲料,人吃家禽,家禽起缓冲,而且家禽死几个无关紧要

2.婴儿吃奶粉,你敢说婴儿死几个无关紧要?

drculax

QUOTE:

Posted by 6688 on 2008-9-19 16:50


1.家禽吃饲料,人吃家禽,家禽起缓冲,而且家禽死几个无关紧要

不声不响滴把FDA的粗腿又抱上了

QUOTE:

Posted by 6688 on 2008-9-19 16:50

2.婴儿吃奶粉,你敢说婴儿死几个无关紧要?

我不敢说，FDA也不敢说，CCAV也不敢说


这个帖子讨论的一直是体重60公斤的“婴儿”？：

＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ccav：
据医学专家介绍，美国食品药物管理局、欧洲食品安全局以及我国卫生部门的权威机构，均对人体摄入三聚氰胺安全限量进行了科学评估，按照最严格的评估标准计算：以一个标准体重60公斤的成年人为例，食用上述三聚氰胺含量的液态奶，如每天不超过2公升(即8袋，每袋250毫升)，对人体是安全的，到目前为止也未发现由于食用上述品牌液态奶导致泌尿系统结石的病例。

＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

Truehand

QUOTE:

Posted by drculax on 2008-9-19 16:11
单体是什么意思？

可以把单体简单地理解为聚合物的原料。（聚合物的意思知道吧？）

比如聚氯乙烯的单体就是氯乙烯，聚乙烯的单体是乙烯。

一个聚合物可能会有一种以上的单体。比如三聚氰胺就是三聚氰胺树脂（也是一种聚合物）的单体之一。

需要注意的是单体虽然是聚合物的原料，但是单体和聚合物的物理和化学性质可能完全不同，不能简单地由单体的性质推断聚合物的性质，反之亦然。